1. Thickened Skin on the Ankle
If the skin of your ankle becomes thick and appears darker than the skin around it, you may suffer from venous stasis. Venous stasis is a circulatory problem. It is critical to seek medical attention if you suspect you suffer from decreased circulation. Other symptoms of venous stasis may include swelling of the legs or ankles, aching legs, skin that is leathery in appearance, and itching. Venous stasis is often linked to varicose veins, a condition in which faulty valves in the veins prevent blood from flowing back up to the heart.